Two heavy crates, m1 and m2, lie on different inclines with angles 18.00 and 33.00 , respectively. A cable, which runs over a pulley, connects the crates. The masses of the cable and the pulley are negligible. Assume that each incline is frictionless and that the system is in equilibrium. The mass of m1 is 4.26 x 102 kg.

a) Calculate the mass of m2 needed to keep the system in a state of equilibrium. [3] b) Now suppose that m2 is 1.95 x 102

kg. Calculate the acceleration of the crates.